Explain the following in terms of gain or loss of oxygen with two examples each: (a) Oxidation (b) Reduction

Question:

Explain the following in terms of gain or loss of oxygen with two examples each:

(a) Oxidation

(b) Reduction

Answer:

(a) Oxidation: The process that involves the addition of oxygen is oxidation.
(i) 2Mg + O₂ → 2MgO

Oxidation of Magnesium to form Magnesium oxide.

(ii) 4Fe + 3O₂ → 2Fe₂O₃

Oxidation of Iron to form Ferric oxide.

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(b) Reduction: The process that involves the loss of oxygen is reduction.

(i)2PbO + C → 2Pb + CO₂

Reduction of oxygen from lead to form carbon dioxide.

(i)Zn + CuSO₄ → ZnSO₄+ Cu

Reduction of oxygen from copper (II) sulfate to form zinc sulfate and copper.

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